[OpenMP] Allow multiple weak symbols to be loaded from the fat binary
[OpenMP] Allow multiple weak symbols to be loaded from the fat binary

For compatibility with Fortran.

Differential Revision: https://reviews.llvm.org/D31205



git-svn-id: f99161ee8ccfe2101cbe1bdda2220bce2ed25485@298516 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp,llvm-mirror/openmp